TY - JOUR A1 - Tatem, A.J. A1 - Hemelaar, J. A1 - Gray, R.R. A1 - Salemi, M. T1 - Spatial accessibility and the spread of HIV-1 subtypes and recombinants Y1 - 2012 DO - 10.1097/QAD.0b013e328359a904 JF - Aids VL - 26 IS - 18 ER -